Examples with Statement com.google.api.generator.engine.ast.Statement used on opensource projects

Example 6 with Statement

use of com.google.api.generator.engine.ast.Statement in project gapic-generator-java by googleapis.

the class AbstractTransportServiceStubClassComposer method createConstructorMethods.

protected List<MethodDefinition> createConstructorMethods(GapicContext context, Service service, TypeStore typeStore, Map<String, VariableExpr> classMemberVarExprs, Map<String, VariableExpr> callableClassMemberVarExprs, Map<String, VariableExpr> protoMethodNameToDescriptorVarExprs, List<Statement> classStatements) {
    TypeNode stubSettingsType = typeStore.get(getTransportContext().classNames().getServiceStubSettingsClassName(service));
    VariableExpr settingsVarExpr = VariableExpr.withVariable(Variable.builder().setName("settings").setType(stubSettingsType).build());
    TypeNode clientContextType = FIXED_TYPESTORE.get("ClientContext");
    VariableExpr clientContextVarExpr = VariableExpr.withVariable(Variable.builder().setName("clientContext").setType(clientContextType).build());
    VariableExpr callableFactoryVarExpr = VariableExpr.withVariable(Variable.builder().setName("callableFactory").setType(getTransportContext().stubCallableFactoryType()).build());
    TypeNode thisClassType = typeStore.get(getTransportContext().classNames().getTransportServiceStubClassName(service));
    TypeNode ioExceptionType = TypeNode.withReference(ConcreteReference.withClazz(IOException.class));
    BiFunction<List<VariableExpr>, List<Statement>, MethodDefinition> ctorMakerFn = (args, body) -> MethodDefinition.constructorBuilder().setScope(ScopeNode.PROTECTED).setReturnType(thisClassType).setHeaderCommentStatements(Arrays.asList(createProtectedCtorComment(service))).setArguments(args.stream().map(v -> v.toBuilder().setIsDecl(true).build()).collect(Collectors.toList())).setThrowsExceptions(Arrays.asList(ioExceptionType)).setBody(body).build();
    // First constructor method.
    MethodDefinition firstCtor = ctorMakerFn.apply(Arrays.asList(settingsVarExpr, clientContextVarExpr), Arrays.asList(ExprStatement.withExpr(ReferenceConstructorExpr.thisBuilder().setType(thisClassType).setArguments(settingsVarExpr, clientContextVarExpr, NewObjectExpr.builder().setType(typeStore.get(getTransportContext().classNames().getTransportServiceCallableFactoryClassName(service))).build()).build())));
    Expr thisExpr = ValueExpr.withValue(ThisObjectValue.withType(typeStore.get(getTransportContext().classNames().getTransportServiceStubClassName(service))));
    // Body of the second constructor method.
    List<Statement> secondCtorStatements = new ArrayList<>();
    List<Expr> secondCtorExprs = new ArrayList<>();
    secondCtorExprs.add(AssignmentExpr.builder().setVariableExpr(classMemberVarExprs.get("callableFactory").toBuilder().setExprReferenceExpr(thisExpr).build()).setValueExpr(callableFactoryVarExpr).build());
    VariableExpr operationsStubClassVarExpr = classMemberVarExprs.get(getTransportContext().transportOperationsStubNames().get(0));
    // TODO: refactor this
    if (generateOperationsStubLogic(service)) {
        secondCtorExprs.addAll(createOperationsStubInitExpr(service, thisExpr, operationsStubClassVarExpr, clientContextVarExpr, callableFactoryVarExpr));
    }
    secondCtorStatements.addAll(secondCtorExprs.stream().map(ExprStatement::withExpr).collect(Collectors.toList()));
    secondCtorExprs.clear();
    secondCtorStatements.add(EMPTY_LINE_STATEMENT);
    // Transport settings local variables.
    Map<String, VariableExpr> javaStyleMethodNameToTransportSettingsVarExprs = service.methods().stream().collect(Collectors.toMap(m -> JavaStyle.toLowerCamelCase(m.name()), m -> VariableExpr.withVariable(Variable.builder().setName(String.format("%sTransportSettings", JavaStyle.toLowerCamelCase(m.name()))).setType(TypeNode.withReference(ConcreteReference.builder().setClazz(getTransportContext().callSettingsClass()).setGenerics(Arrays.asList(m.inputType().reference(), m.outputType().reference())).build())).build())));
    secondCtorExprs.addAll(service.methods().stream().map(m -> createTransportSettingsInitExpr(m, javaStyleMethodNameToTransportSettingsVarExprs.get(JavaStyle.toLowerCamelCase(m.name())), protoMethodNameToDescriptorVarExprs.get(m.name()), classStatements)).collect(Collectors.toList()));
    secondCtorStatements.addAll(secondCtorExprs.stream().map(ExprStatement::withExpr).collect(Collectors.toList()));
    secondCtorExprs.clear();
    secondCtorStatements.add(EMPTY_LINE_STATEMENT);
    // Initialize <method>Callable variables.
    secondCtorExprs.addAll(callableClassMemberVarExprs.entrySet().stream().map(e -> createCallableInitExpr(context, service, e.getKey(), e.getValue(), callableFactoryVarExpr, settingsVarExpr, clientContextVarExpr, operationsStubClassVarExpr, thisExpr, javaStyleMethodNameToTransportSettingsVarExprs)).collect(Collectors.toList()));
    secondCtorStatements.addAll(secondCtorExprs.stream().map(ExprStatement::withExpr).collect(Collectors.toList()));
    secondCtorExprs.clear();
    secondCtorStatements.add(EMPTY_LINE_STATEMENT);
    secondCtorStatements.addAll(createLongRunningClient(service, typeStore));
    // Instantiate backgroundResources.
    MethodInvocationExpr getBackgroundResourcesMethodExpr = MethodInvocationExpr.builder().setExprReferenceExpr(clientContextVarExpr).setMethodName("getBackgroundResources").build();
    VariableExpr backgroundResourcesVarExpr = classMemberVarExprs.get("backgroundResources");
    secondCtorExprs.add(AssignmentExpr.builder().setVariableExpr(backgroundResourcesVarExpr.toBuilder().setExprReferenceExpr(thisExpr).build()).setValueExpr(NewObjectExpr.builder().setType(FIXED_TYPESTORE.get("BackgroundResourceAggregation")).setArguments(Arrays.asList(getBackgroundResourcesMethodExpr)).build()).build());
    secondCtorStatements.addAll(secondCtorExprs.stream().map(ExprStatement::withExpr).collect(Collectors.toList()));
    secondCtorExprs.clear();
    // Second constructor method.
    MethodDefinition secondCtor = ctorMakerFn.apply(Arrays.asList(settingsVarExpr, clientContextVarExpr, callableFactoryVarExpr), secondCtorStatements);
    return Arrays.asList(firstCtor, secondCtor);
}

Example 7 with Statement

use of com.google.api.generator.engine.ast.Statement in project gapic-generator-java by googleapis.

the class AbstractServiceClientClassComposer method createMethodVariants.

private static List<MethodDefinition> createMethodVariants(Method method, String clientName, Map<String, Message> messageTypes, TypeStore typeStore, Map<String, ResourceName> resourceNames, List<Sample> samples) {
    List<MethodDefinition> javaMethods = new ArrayList<>();
    String methodName = JavaStyle.toLowerCamelCase(method.name());
    TypeNode methodInputType = method.inputType();
    TypeNode methodOutputType = method.isPaged() ? typeStore.get(String.format(PAGED_RESPONSE_TYPE_NAME_PATTERN, method.name())) : method.outputType();
    if (method.hasLro()) {
        LongrunningOperation lro = method.lro();
        methodOutputType = TypeNode.withReference(typeStore.get("OperationFuture").reference().copyAndSetGenerics(Arrays.asList(lro.responseType().reference(), lro.metadataType().reference())));
    }
    for (List<MethodArgument> signature : method.methodSignatures()) {
        // Get the argument list.
        List<VariableExpr> arguments = signature.stream().map(methodArg -> VariableExpr.builder().setVariable(Variable.builder().setName(JavaStyle.toLowerCamelCase(methodArg.name())).setType(methodArg.type()).build()).setIsDecl(true).build()).collect(Collectors.toList());
        // Request proto builder.
        VariableExpr requestVarExpr = VariableExpr.builder().setVariable(Variable.builder().setName("request").setType(methodInputType).build()).setIsDecl(true).build();
        Expr requestBuilderExpr = createRequestBuilderExpr(method, signature, typeStore);
        AssignmentExpr requestAssignmentExpr = AssignmentExpr.builder().setVariableExpr(requestVarExpr).setValueExpr(requestBuilderExpr).build();
        List<Statement> statements = new ArrayList<>();
        statements.add(ExprStatement.withExpr(requestAssignmentExpr));
        MethodInvocationExpr rpcInvocationExpr = MethodInvocationExpr.builder().setMethodName(String.format(method.hasLro() ? "%sAsync" : "%s", methodName)).setArguments(Arrays.asList(requestVarExpr.toBuilder().setIsDecl(false).build())).setReturnType(methodOutputType).build();
        Optional<Sample> methodSample = Optional.of(ServiceClientHeaderSampleComposer.composeShowcaseMethodSample(method, typeStore.get(clientName), signature, resourceNames, messageTypes));
        Optional<String> methodDocSample = Optional.empty();
        if (methodSample.isPresent()) {
            samples.add(methodSample.get());
            methodDocSample = Optional.of(SampleCodeWriter.writeInlineSample(methodSample.get().body()));
        }
        MethodDefinition.Builder methodVariantBuilder = MethodDefinition.builder().setHeaderCommentStatements(ServiceClientCommentComposer.createRpcMethodHeaderComment(method, signature, methodDocSample)).setScope(ScopeNode.PUBLIC).setIsFinal(true).setName(String.format(method.hasLro() ? "%sAsync" : "%s", methodName)).setArguments(arguments);
        if (isProtoEmptyType(methodOutputType)) {
            statements.add(ExprStatement.withExpr(rpcInvocationExpr));
            methodVariantBuilder = methodVariantBuilder.setReturnType(TypeNode.VOID);
        } else {
            methodVariantBuilder = methodVariantBuilder.setReturnType(methodOutputType).setReturnExpr(rpcInvocationExpr);
        }
        if (method.isDeprecated()) {
            methodVariantBuilder = methodVariantBuilder.setAnnotations(Arrays.asList(AnnotationNode.withType(TypeNode.DEPRECATED)));
        }
        methodVariantBuilder = methodVariantBuilder.setBody(statements);
        javaMethods.add(methodVariantBuilder.build());
    }
    return javaMethods;
}

Example 8 with Statement

use of com.google.api.generator.engine.ast.Statement in project gapic-generator-java by googleapis.

the class AbstractServiceClientTestClassComposer method createRpcExceptionTestStatements.

protected List<Statement> createRpcExceptionTestStatements(Method method, List<MethodArgument> methodSignature, Map<String, VariableExpr> classMemberVarExprs, Map<String, ResourceName> resourceNames, Map<String, Message> messageTypes) {
    List<VariableExpr> argVarExprs = new ArrayList<>();
    List<Expr> tryBodyExprs = new ArrayList<>();
    if (methodSignature.isEmpty()) {
        // Construct the actual request.
        VariableExpr varExpr = VariableExpr.withVariable(Variable.builder().setType(method.inputType()).setName("request").build());
        argVarExprs.add(varExpr);
        Message requestMessage = messageTypes.get(method.inputType().reference().fullName());
        Preconditions.checkNotNull(requestMessage);
        Map<String, String> valuePatterns = Collections.emptyMap();
        if (getTransportContext().useValuePatterns() && method.hasHttpBindings()) {
            valuePatterns = method.httpBindings().getPathParametersValuePatterns();
        }
        Expr valExpr = DefaultValueComposer.createSimpleMessageBuilderValue(requestMessage, resourceNames, messageTypes, valuePatterns);
        tryBodyExprs.add(AssignmentExpr.builder().setVariableExpr(varExpr.toBuilder().setIsDecl(true).build()).setValueExpr(valExpr).build());
    } else {
        Map<String, String> valuePatterns = Collections.emptyMap();
        if (getTransportContext().useValuePatterns() && method.hasHttpBindings()) {
            valuePatterns = method.httpBindings().getPathParametersValuePatterns();
        }
        for (MethodArgument methodArg : methodSignature) {
            String methodArgName = JavaStyle.toLowerCamelCase(methodArg.name());
            VariableExpr varExpr = VariableExpr.withVariable(Variable.builder().setType(methodArg.type()).setName(methodArgName).build());
            argVarExprs.add(varExpr);
            Expr valExpr = DefaultValueComposer.createMethodArgValue(methodArg, resourceNames, messageTypes, valuePatterns);
            tryBodyExprs.add(AssignmentExpr.builder().setVariableExpr(varExpr.toBuilder().setIsDecl(true).build()).setValueExpr(valExpr).build());
        }
    }
    String rpcJavaName = JavaStyle.toLowerCamelCase(method.name());
    if (method.hasLro()) {
        rpcJavaName += "Async";
    }
    MethodInvocationExpr rpcJavaMethodInvocationExpr = MethodInvocationExpr.builder().setExprReferenceExpr(classMemberVarExprs.get("client")).setMethodName(rpcJavaName).setArguments(argVarExprs.stream().map(e -> (Expr) e).collect(Collectors.toList())).build();
    if (method.hasLro()) {
        rpcJavaMethodInvocationExpr = MethodInvocationExpr.builder().setExprReferenceExpr(rpcJavaMethodInvocationExpr).setMethodName("get").build();
    }
    tryBodyExprs.add(rpcJavaMethodInvocationExpr);
    VariableExpr catchExceptionVarExpr = VariableExpr.builder().setVariable(Variable.builder().setType(TypeNode.withExceptionClazz(method.hasLro() ? ExecutionException.class : InvalidArgumentException.class)).setName("e").build()).build();
    List<Statement> catchBody = method.hasLro() ? createRpcLroExceptionTestCatchBody(catchExceptionVarExpr, false) : Arrays.asList(CommentStatement.withComment(LineComment.withComment("Expected exception.")));
    // Assert a failure if no exception was raised.
    tryBodyExprs.add(MethodInvocationExpr.builder().setStaticReferenceType(FIXED_TYPESTORE.get("Assert")).setMethodName("fail").setArguments(ValueExpr.withValue(StringObjectValue.withValue("No exception raised"))).build());
    TryCatchStatement tryCatchBlock = TryCatchStatement.builder().setTryBody(tryBodyExprs.stream().map(e -> ExprStatement.withExpr(e)).collect(Collectors.toList())).addCatch(catchExceptionVarExpr.toBuilder().setIsDecl(true).build(), catchBody).build();
    return Arrays.asList(EMPTY_LINE_STATEMENT, tryCatchBlock);
}

Example 9 with Statement

use of com.google.api.generator.engine.ast.Statement in project gapic-generator-java by googleapis.

the class MockServiceImplClassComposer method createHandleObjectStatement.

private static Statement createHandleObjectStatement(Method protoMethod, VariableExpr requestArgVarExpr, VariableExpr responseObserverVarExpr, VariableExpr localResponseVarExpr) {
    List<Expr> ifBodyExprs = new ArrayList<>();
    boolean isAnonymousClass = requestArgVarExpr == null;
    if (!isAnonymousClass) {
        ifBodyExprs.add(MethodInvocationExpr.builder().setMethodName("add").setArguments(Arrays.asList(requestArgVarExpr)).setExprReferenceExpr(requestsVarExpr).build());
    }
    ifBodyExprs.add(MethodInvocationExpr.builder().setMethodName("onNext").setArguments(Arrays.asList(CastExpr.builder().setType(protoMethod.outputType()).setExpr(localResponseVarExpr).build())).setExprReferenceExpr(responseObserverVarExpr).build());
    if (!isAnonymousClass) {
        ifBodyExprs.add(MethodInvocationExpr.builder().setMethodName("onCompleted").setExprReferenceExpr(responseObserverVarExpr).build());
    }
    TypeNode exceptionType = TypeNode.withReference(ConcreteReference.withClazz(Exception.class));
    // Constructs `response == null ? "" : response.getClass().getName()`.
    Expr actualResponseTypeString = TernaryExpr.builder().setConditionExpr(RelationalOperationExpr.equalToWithExprs(localResponseVarExpr, ValueExpr.createNullExpr())).setThenExpr(ValueExpr.withValue(StringObjectValue.withValue("null"))).setElseExpr(MethodInvocationExpr.builder().setExprReferenceExpr(MethodInvocationExpr.builder().setExprReferenceExpr(localResponseVarExpr).setMethodName("getClass").build()).setMethodName("getName").setReturnType(TypeNode.STRING).build()).build();
    Function<TypeNode, Expr> typeToStrFn = t -> MethodInvocationExpr.builder().setExprReferenceExpr(VariableExpr.builder().setStaticReferenceType(t).setVariable(Variable.builder().setType(TypeNode.CLASS_OBJECT).setName("class").build()).build()).setMethodName("getName").setReturnType(TypeNode.STRING).build();
    Expr expectedResponseTypeOneString = typeToStrFn.apply(protoMethod.outputType());
    Expr expectedResponseTypeTwoString = typeToStrFn.apply(exceptionType);
    Expr newExceptionExpr = NewObjectExpr.builder().setType(TypeNode.withReference(ConcreteReference.withClazz(IllegalArgumentException.class))).setArguments(// Operation.class.getName(), Exception.class.getName());
    MethodInvocationExpr.builder().setStaticReferenceType(TypeNode.STRING).setMethodName("format").setArguments(ValueExpr.withValue(StringObjectValue.withValue("Unrecognized response type %s for method " + protoMethod.name() + ", expected %s or %s")), actualResponseTypeString, expectedResponseTypeOneString, expectedResponseTypeTwoString).build()).build();
    return IfStatement.builder().setConditionExpr(InstanceofExpr.builder().setExpr(localResponseVarExpr).setCheckType(protoMethod.outputType()).build()).setBody(ifBodyExprs.stream().map(e -> ExprStatement.withExpr(e)).collect(Collectors.toList())).addElseIf(InstanceofExpr.builder().setExpr(localResponseVarExpr).setCheckType(exceptionType).build(), Arrays.asList(ExprStatement.withExpr(MethodInvocationExpr.builder().setMethodName("onError").setArguments(Arrays.asList(CastExpr.builder().setType(exceptionType).setExpr(localResponseVarExpr).build())).setExprReferenceExpr(responseObserverVarExpr).build()))).setElseBody(Arrays.asList(ExprStatement.withExpr(MethodInvocationExpr.builder().setMethodName("onError").setExprReferenceExpr(responseObserverVarExpr).setArguments(Arrays.asList(newExceptionExpr)).build()))).build();
}

Example 10 with Statement

use of com.google.api.generator.engine.ast.Statement in project gapic-generator-java by googleapis.

the class MockServiceImplClassComposer method createRequestResponseAssignStatements.

private static List<Statement> createRequestResponseAssignStatements() {
    Expr assignRequestVarExpr = AssignmentExpr.builder().setVariableExpr(requestsVarExpr).setValueExpr(NewObjectExpr.builder().setType(TypeNode.withReference(ConcreteReference.withClazz(ArrayList.class))).setIsGeneric(true).build()).build();
    Expr assignResponsesVarExpr = AssignmentExpr.builder().setVariableExpr(responsesVarExpr).setValueExpr(NewObjectExpr.builder().setType(TypeNode.withReference(ConcreteReference.withClazz(LinkedList.class))).setIsGeneric(true).build()).build();
    return Arrays.asList(assignRequestVarExpr, assignResponsesVarExpr).stream().map(e -> ExprStatement.withExpr(e)).collect(Collectors.toList());
}